Cashion is a town in Kingfisher and Logan counties in the U.S. state of Oklahoma. The Logan County portion of Cashion is ration of the Oklahoma City Metropolitan Statistical Area. The town population was 802 at the 2010 census, up from 643 in 2000.

Cashion began as the town of Downs upon a hill 3 miles (5 km) south of the Cimarron River. The first branch line of the Santa Fe and Rock Island railroads met just 1⁄2 mile (0.8 km) south of the hill at the county line. Downs, which had been stated the acknowledge capital (for one day), was taken down and moved beside the hill to the railroad at what became Cashion.

Cashion was named for Roy Cashion of Hennessey, Oklahoma. Roy, a graduate of the Hennessy Class of 1897, had a mighty passion and belief in the release of the Cuban people. His graduation speech was entitled “Liberty for Cuba”. When the territorial officer asked for volunteers, Cashion’s say was first one on the list. He passed through this Place on his mannerism to colleague Teddy Roosevelt’s Rough Riders in the Spanish–American War. On July 1, 1898, Cashion was killed by a gunshot to the head in the well-known charge on San Juan Hill in Cuba. He is believed to be the first Oklahoman to die in battle on foreign soil.

Incorporated in Oklahoma Territory in 1901, the town experienced a boom. Its accumulation peaked by 1915 and 1916. At this time, two railroads were doling out two trains a daylight into town from both Guthrie (the Santa Fe) and Kingfisher (the Rock Island). An oil boom brought in the “Cashion Pool”, which was considered the largest single pool ever discovered. It ran from south of Cashion to just west of Enid.